HumanizerEval

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September 2026 review · same 50 texts

Rephrasy vs Ryne

In the September 2026 HumanizerEval review, Rephrasy and Ryne rewrote the same 50 English texts. Rephrasy cleared all 5 detectors on 20 of them; Ryne on 0. The difference is mostly Originality.ai: on 43 samples Rephrasy passed it where Ryne failed, and the reverse never happened.

Per-sample agreement

Per-sample agreement, September 2026. Counts are out of the 50 shared samples, computed at the 50% human-score threshold. Margin counts the samples only one tool passed, higher count first.
DetectorPassed more oftenMarginBoth passedNeither passed
Pangram 4.0Rephrasy14 to 2925
GPTZero 2026-09-13-baseRephrasy40 to 046
Originality.ai turboRephrasy43 to 007
ZeroGPT defaultRephrasy19 to 0310
Winston AI 5.0Rephrasy37 to 0130
All 5 detectorsRephrasy20 to 0030

Every count is computed from scores.csv at build time, not transcribed. “Neither passed” counts the texts that defeated both tools; on Pangram that was 25 of 50 here.

Quality and output discipline

Quality and output discipline, September 2026.
MeasureRephrasyRyne
36%44%
30%80%
92%98%
60%94%
1.131.07
30
00
v4Aggressive, beast mode
Websiterephrasy.ai ryne.ai

On per-sample quality scores, Rephrasy scored higher on 5 samples, Ryne on 34, and the two tied on 11. Ryne’s output was shorter on 30 of 50 samples; mean length ratios were 1.13 and 1.07, or 13% longer than the input and 7% longer than the input respectively.

Where each one outperforms the other

Rephrasy

  • Pangram: passed 23 of 50 against 11, including 14 samples where Ryne failed, against 2 the other way.
  • GPTZero: passed 44 of 50 against 4, including 40 samples where Ryne failed, against 0 the other way.
  • Originality.ai: passed 43 of 50 against 0, including 43 samples where Ryne failed, against 0 the other way.
  • ZeroGPT: passed 50 of 50 against 31, including 19 samples where Ryne failed, against 0 the other way.
  • Winston AI: passed 50 of 50 against 13, including 37 samples where Ryne failed, against 0 the other way.

Ryne

  • Pangram: passed 2 samples where Rephrasy failed, even though it was detected more often overall, passing 11 to 23.
  • Factual consistency: 44% against 36%.
  • Naturalness: 80% against 30%.
  • Syntax integrity: 98% against 92%.
  • Stance preservation: 94% against 60%.
  • Length: shorter output on 30 of 50 samples, which matters under a word limit.

Rephrasy vs Ryne FAQ

Is Rephrasy better than Ryne?

In the September 2026 HumanizerEval review, Rephrasy cleared all 5 detectors on 20 of the 50 shared samples and Ryne on 0. Quality ran 5 samples to 34, with 11 ties.

Which humanizer is best for Pangram, Rephrasy or Ryne?

Rephrasy. In September 2026, Rephrasy passed Pangram on 23 of the 50 shared samples and Ryne on 11. On 14 samples Rephrasy passed where Ryne failed; the reverse happened on 2. Both failed on 25.

Which humanizer changes the text less?

Ryne. It scored higher on per-sample quality on 34 of 50 samples, against 5. Rephrasy’s outputs averaged 1.13× the input length and passed factual consistency on 36%; Ryne’s averaged 1.07× and passed on 44%. On stance preservation the split was 60% to 94%. Ryne produced the shorter output on 30 of 50 samples.

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